[INFO] cloning repository https://github.com/MegasKomnenos/prototype4
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MegasKomnenos/prototype4" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMegasKomnenos%2Fprototype4", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMegasKomnenos%2Fprototype4'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 79da08de99f8cc6281f6af82d9abec773825c31b
[INFO] documenting MegasKomnenos/prototype4 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMegasKomnenos%2Fprototype4" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MegasKomnenos/prototype4 on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/MegasKomnenos/prototype4
[INFO] finished tweaking git repo https://github.com/MegasKomnenos/prototype4
[INFO] tweaked toml for git repo https://github.com/MegasKomnenos/prototype4 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/MegasKomnenos/prototype4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6d3df3d37fb403034ed23a812d8ab6b47020b0351030e098a3cd846713f44cd8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6d3df3d37fb403034ed23a812d8ab6b47020b0351030e098a3cd846713f44cd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d3df3d37fb403034ed23a812d8ab6b47020b0351030e098a3cd846713f44cd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d3df3d37fb403034ed23a812d8ab6b47020b0351030e098a3cd846713f44cd8", kill_on_drop: false }`
[INFO] [stdout] 6d3df3d37fb403034ed23a812d8ab6b47020b0351030e098a3cd846713f44cd8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 22a3286206ab551ffc5b2361f84e5cb8e5f09421db172e0b98e4b5ef00b4a70a
[INFO] running `Command { std: "docker" "start" "-a" "22a3286206ab551ffc5b2361f84e5cb8e5f09421db172e0b98e4b5ef00b4a70a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.73
[INFO] [stderr]    Compiling syn v1.0.35
[INFO] [stderr]    Compiling rayon-core v1.7.1
[INFO] [stderr]     Checking smallvec v1.4.1
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]     Checking bit-vec v0.6.2
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]     Checking fixedbitset v0.2.0
[INFO] [stderr]     Checking bytemuck v1.2.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling memoffset v0.5.5
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling rayon v1.3.1
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling num-bigint v0.3.0
[INFO] [stderr]    Compiling num-rational v0.3.0
[INFO] [stderr]    Compiling hashbrown v0.8.1
[INFO] [stderr]    Compiling indexmap v1.5.0
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking tracing-core v0.1.11
[INFO] [stderr]     Checking inflate v0.3.4
[INFO] [stderr]    Compiling paste-impl v0.1.18
[INFO] [stderr]     Checking gif v0.9.2
[INFO] [stderr]     Checking bit-set v0.5.2
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking deflate v0.8.6
[INFO] [stderr]     Checking tiff v0.5.0
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking crossbeam-channel v0.4.3
[INFO] [stderr]     Checking crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking png v0.16.7
[INFO] [stderr]     Checking paste v0.1.18
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking num-complex v0.3.0
[INFO] [stderr]     Checking pathfinding v2.0.4
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking png v0.11.0
[INFO] [stderr]     Checking num v0.3.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.20
[INFO] [stderr]     Checking image v0.18.0
[INFO] [stderr]     Checking image v0.23.7
[INFO] [stderr]     Checking noise v0.6.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.20
[INFO] [stderr]    Compiling tracing-attributes v0.1.9
[INFO] [stderr]    Compiling derivative v2.1.1
[INFO] [stderr]     Checking thiserror v1.0.20
[INFO] [stderr]     Checking tracing v0.1.17
[INFO] [stderr]     Checking legion-core v0.2.4 (https://github.com/MegasKomnenos/legion#3b65bb04)
[INFO] [stderr]     Checking legion-systems v0.2.4 (https://github.com/MegasKomnenos/legion#3b65bb04)
[INFO] [stderr]     Checking ron v0.6.0
[INFO] [stderr]     Checking legion v0.2.4 (https://github.com/MegasKomnenos/legion#3b65bb04)
[INFO] [stderr]  Documenting prototype4 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(get_mut_unchecked)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(cmp_min_max_by)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `prototype4`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name prototype4 src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern half=/opt/rustwide/target/debug/deps/libhalf-359b462e9683fb07.rmeta --extern image=/opt/rustwide/target/debug/deps/libimage-b89275866745fb5a.rmeta --extern legion=/opt/rustwide/target/debug/deps/liblegion-d6544006e7b7f62b.rmeta --extern noise=/opt/rustwide/target/debug/deps/libnoise-947cf074179e97b3.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-23d154cdfbb1a131.rmeta --extern num_cpus=/opt/rustwide/target/debug/deps/libnum_cpus-375e33c2773b2d10.rmeta --extern pathfinding=/opt/rustwide/target/debug/deps/libpathfinding-d5fe7138b791e156.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-ca1b5f40ef9231e6.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-5b23d3d708575fd1.rmeta --extern ron=/opt/rustwide/target/debug/deps/libron-d546cbd1d44893f0.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-b16d4bb4b99ecef9.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "22a3286206ab551ffc5b2361f84e5cb8e5f09421db172e0b98e4b5ef00b4a70a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22a3286206ab551ffc5b2361f84e5cb8e5f09421db172e0b98e4b5ef00b4a70a", kill_on_drop: false }`
[INFO] [stdout] 22a3286206ab551ffc5b2361f84e5cb8e5f09421db172e0b98e4b5ef00b4a70a